<template slot-scope="scope">
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <el-row :gutter="20"
        ><!-- gutter是指定每个分栏的间隔 -->
        <!-- 分栏一共占24格，给搜索框7格，添加按钮4格 -->
        <el-col :span="7">
          <!-- 搜索与添加区域 -->
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUsersList()">
            <el-button slot="append" icon="el-icon-search" @click="getUsersList()"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <el-table :data="userList" border stripe><!-- 带边框、斑马纹 -->
          <el-table-column type="index"></el-table-column>
          <el-table-column label="姓名" prop="username"></el-table-column>
          <el-table-column label="邮箱" prop="email"></el-table-column>
          <el-table-column label="电话" prop="mobile"></el-table-column>
          <el-table-column label="角色" prop="role_name"></el-table-column>
          <el-table-column label="状态" prop="mg_state">
              <template slot-scope="scope">
                  <el-switch v-model="scope.row.mg_state"
                    active-color="#13ce66"
                    inactive-color="#ff4949" @change="userStateChange(scope.row)"> 
                  </el-switch>
              </template>
          </el-table-column>
          <el-table-column label="操作" width="200px">
              <template slot-scope="scope">
                  <!-- 放置修改、删除和分配角色按钮 -->
                  <el-tooltip effect="dark" content="修改" placement="top">
                    <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                  </el-tooltip>
                  <el-tooltip effect="dark" content="删除" placement="top">
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                  </el-tooltip>
                  <el-tooltip effect="dark" content="分配角色" placement="top">
                    <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                  </el-tooltip>
              </template>
          </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize" 
        layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed"
    :close-on-click-modal='false'>
      <!-- 内容主体区 -->
      <el-form :model="addUserForm" :rules="addUserFormRules" ref="addUserFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username"> <!-- prop是验证规则属性 -->
          <el-input v-model="addUserForm.username" @input="change($event)"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addUserForm.password" type="password" @input="change($event)"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addUserForm.email" @input="change($event)"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addUserForm.mobile" @input="change($event)"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser()">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed"
    :close-on-click-modal='false'>
      <!-- 内容主体区 -->
      <el-form :model="editUserForm" :rules="editUserFormRules" ref="editUserFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="editUserForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editUserForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editUserForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUser()">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>
          分配新角色：
          <el-select v-model="selectRoleId" placeholder="请选择">
             <el-option v-for="item in roleList" :key="item.id" 
                  :label="item.roleName" :value="item.id"> 
             </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
          <el-button @click="setRoleDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="saveRoleInfo()">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    var checkEmail = (rule,value,callback) =>{
        //验证邮箱的正则表达式
        const regEmail = /^([a-zA-Z]|[0-9])(\w|\-)+@[a-zA-Z0-9]+\.([a-zA-Z]{2,4})$/;
        if(regEmail.test(value)){
          return callback(); //合法邮箱
        }
        return callback(new Error("请输入合法的邮箱"));
    }
    var checkMobile = (rule,value,callback) =>{
        //验证手机号的正则表达式
        const regMobile = /^(13[0-9]|14[01456879]|15[0-35-9]|16[2567]|17[0-8]|18[0-9]|19[0-35-9])\d{8}$/;
        if(regMobile.test(value)){
          return callback(); //合法手机号
        }
        return callback(new Error("请输入合法的手机号"));
    }
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: "",
        pagenum: 1, //当前的页数
        pagesize: 2, //每页的数量
      },
      userList : [],
      total: 0,
      addDialogVisible: false, //控制添加用户对话框的显示与隐藏
      editDialogVisible: false, //控制修改用户对话框的显示与隐藏
      setRoleDialogVisible: false, //控制用户分配角色对话框的显示与隐藏
      //添加用户的表单数据
      addUserForm: {},
      //修改用户的表单数据
      editUserForm: {},
      //修改表单的验证规则对象
      editUserFormRules: {
        email: [{required:true,message:'请输入邮箱',trigger:'blur'},{validator: checkEmail,trigger:'blur'}],
        mobile: [{required:true,message:'请输入手机号',trigger:'blur'},{validator: checkMobile,trigger:'blur'}]
      },
      //添加表单的验证规则对象
      addUserFormRules: {
        username: [{required:true,message:'请输入用户名',trigger:'blur'},
        {min:3,max:10,message:'用户名长度在3~10个字符',trigger:'blur'}],
        password: [{required:true,message:'请输入密码',trigger:'blur'},
        {min:6,max:15,message:'密码长度在6~15个字符',trigger:'blur'}],
        email: [{required:true,message:'请输入邮箱',trigger:'blur'},{validator: checkEmail,trigger:'blur'}],
        mobile: [{required:true,message:'请输入手机号',trigger:'blur'},{validator: checkMobile,trigger:'blur'}]
      },
      //需要被分配角色的用户信息
      userInfo: [],
      //所有角色的数据列表
      roleList: [],
      //已选中的角色ID值
      selectRoleId :''
    };
  },
  created() {
    this.getUsersList();
  },
  methods: {
    change(e){//解决el-input不能输入问题
      this.$forceUpdate();
    },
    async getUsersList() {
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo,
      });
      if(res.meta.status!=200){
          return this.$message.error("获取用户列表失败！");
      }
      console.log(res);
      this.userList = res.data.users;
      this.total = res.data.total;
    },
    //监听 pagesize 改变的事件
    handleSizeChange(newSize){
        console.log(newSize);
        this.queryInfo.pagesize = newSize;//重新指定每页数据量
        this.getUsersList();//带着新的分页请求获取数据
    },
    //监听 页码值 改变的事件
    handleCurrentChange(newPage){
        console.log(newPage);
        this.queryInfo.pagenum = newPage;//重新指定当前页
        this.getUsersList();//带着新的分页请求获取数据
    },
    //监听switch开关状态的改变
    async userStateChange(userinfo){
      console.log(userinfo);
      const {data:res} = await this.$http.put('users/'+userinfo.id+"/state/"+userinfo.mg_state);
      if(res.meta.status!=200){
        userinfo.mg_state=!userinfo.mg_state;//操作失败状态恢复
        return this.$message.error('更新用户状态失败！');
      }
      this.$message.success('更新用户状态成功！');
    },
    //监听添加用户对话框的关闭状态
    addDialogClosed(){
      this.$refs.addUserFormRef.resetFields();
    },
    // 点击按钮，添加新用户
    addUser(){
      this.$refs.addUserFormRef.validate(async valid =>{
          if(!valid) return;//校验没通过，返回
          //可以发起添加用户的网络请求
          const {data:res} = await this.$http.post('users',this.addUserForm);
          if(res.meta.status!=201){
            return this.$message.error('添加用户失败！');
          }
          this.$message.success('添加用户成功！');
          // 隐藏添加用户的对话框
          this.addDialogVisible = false;
          //重新获取用户列表数据
          this.getUsersList();
      })
    },
    //关闭编辑用户的对话框
    editDialogClosed(){
      this.$refs.editUserFormRef.resetFields();
    },
    //展示编辑用户的对话框
    async showEditDialog(id){
      const {data:res} = await this.$http.get('users/'+id);
      if(res.meta.status!=200){
         return this.$message.error('查询用户信息失败！');
      }
      this.editUserForm = res.data;
      this.editDialogVisible = true;
    },
    //点击按钮，修改用户信息
    editUser(){
      this.$refs.editUserFormRef.validate(async valid =>{
          if(!valid) return;//校验没通过，返回
          //可以发起修改用户的网络请求
          const {data:res} = await this.$http.put('users/'+
          this.editUserForm.id,{
            email:this.editUserForm.email,
            mobile:this.editUserForm.mobile
          });
          if(res.meta.status!=200){
            return this.$message.error('修改用户失败！');
          }
          this.$message.success('修改用户成功！');
          // 隐藏修改用户的对话框
          this.editDialogVisible = false;
          //重新获取用户列表数据
          this.getUsersList();
      })
    },
    //根据ID删除对应用户信息
    removeUserById(id){
      //弹框询问用户是否删除数据
      this.$confirm('此操作将永久删除用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async () => {
        const {data: res} = await this.$http.delete('users/'+id);
        if(res.meta.status!==200){
          return this.$message.error('删除用户失败！');
        }
        this.$message({type: 'success',message: '删除用户成功!'});
        //重新获取用户列表数据
        this.getUsersList();
      }).catch(() => {
        this.$message({type: 'info',message: '已取消删除' });          
      });
    },
    //展示分配角色的对话框
    async setRole(user){
      //在展示对话框之前，加载所有的角色（待用户选择）
      const {data: res} = await this.$http.get('roles');
      if(res.meta.status!==200){
          return this.$message.error('获取角色列表失败！');
      }
      this.roleList = res.data;
      this.userInfo = user;//获取用户信息展示在页面
      //显示对话框
      this.setRoleDialogVisible = true;
    },
    // 点击按钮分配角色
    async saveRoleInfo(){
      if(!this.selectRoleId){
         return this.$message.error('请选择要分配的角色！');
      }
      const {data: res} = await this.$http.put('users/'+this.userInfo.id+'/role',{rid: this.selectRoleId});
      if(res.meta.status!==200){
          return this.$message.error('更新用户角色失败！');
      }
      this.$message.success('更新角色成功！');
      this.getUsersList();//刷新用户列表
      this.selectRoleId = '';//清空本次选择，避免影响下次
      this.setRoleDialogVisible = false;//关闭对话框
    }
  },
};
</script>

<style scoped>
.text {
  font-size: 14px;
}

.item {
  padding: 18px 0;
}
</style>